CONTENTS. 



PAGK 



XXII. Gieseckite and Bergmannite (Spreustein), two 

 Pseudomorphoses of Transformation from Ne- 

 pheline. By Professor J. R. Blum, of Hei- 

 delberg. Communicated by the Author (from 

 Poggendorff), 162 



XXIII. On the Colours of a Jet of Steam and of the At- 



mosphere. By B. Clausius, . . .166 



XXIV. Description of the Tongue and Habits of the Aard- 



vark or Ant-eater of the Cape (Orycteropus 

 Capensis). By William T. Black, Assistant- 

 Surgeon to the Forces, South Africa. Com- 

 municated by the Author, . . .168 



XXV. On the Negroes of the Indian Archipelago and 



Pacific Islands. By W. John Crawfurd, Esq., 

 F.B.S., 175 



XXVI. Scientific Intelligence : — 



METEOROLOGY. 



1. Analyses of Snow and Rain Water, by M. Eu- 

 gene Marchand. 2. Notes on the Climate of 

 Rangoon, by Dr A. Christison. 3. On the Re- 

 cent Earthquake felt at Adderley, . 179-180 



MINERALOGY. 



4. Pseudomorphous Minerals. 5. Large Deposit 

 of Graphite. 6. Sulphur Mine in Upper Egypt. 

 7. Strontiano-calcite. 8. Platinum and Iridos- 

 mine in California. 9. Identity of Donarium 

 with Thorium. 10. Native Iron. 11. Crystal- 

 lisation and Amorphism, . . . 1*81—183 



GEOLOGY. 



12. Flora of the Tertiary Formation. 13. On the 

 Tides, Bed, and Coasts of the North Sea or Ger- 

 man Ocean, 183-186 



14. On the Bones and Eggs of a Gigantic Bird in 



Madagascar. 15. Domestication of Fishes, 186—188 



MISCELLANEOUS. 



16. Freedom of the Arabs from Leprosy. 17. Obi- 

 tuary, ■ 188 



